Jamm\Memory\Shm\SHMObject::find_free_space PHP Method

    protected function find_free_space(array $map, $size)
    {
        $c = count($map);
        if ($c < 1) {
            return 0;
        }
        $_end = $this->max_size;
        usort($map, array($this, 'sort_map'));
        $imap = array_values($map);
        $i = 0;
        $eoa = $c - 1;
        //end of array
        if ($imap[0][0] > $size) {
            return 0;
        }
        for (; $i < $c; $i++) {
            $free_from = $imap[$i][self::map_key_fin] + 1;
            if ($i == $eoa) {
                $free_to = $_end;
            } else {
                $free_to = $imap[$i + 1][self::map_key_start] - 1;
            }
            if ($free_to - $free_from >= $size) {
                return $free_from;
            }
        }
        $this->ReportError('Can not find enough space in memory', __LINE__);
        return false;
    }